Lights Over Tesco Car Park

Basically: Robert reported lights over the Tesco Car Park. Then he said an alien was coming to stay in his room. Were working out whether to believe him. Maybe you can help? Lights Over Tesco Car Park runs at the Pleasance, Edinburgh, from 1-27th August, grab your tickets here: https://tickets.edfringe.com/whats-on/lights-over-tesco-car-park